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PERFLUORPOLYETHER FREE OF PEROXIDIC OXYGEN AND PERFLUOREPOXY GROUPS CONTAINING THE PERFLUORPOLYETHER CHAIN.
PERFLUORPOLYETHER FREE OF PEROXIDIC OXYGEN AND PERFLUOREPOXY GROUPS CONTAINING THE PERFLUORPOLYETHER CHAIN.
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机译:全氟橡胶不含过氧氧和含全氟橡胶链的全氟氧基。
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摘要
Perfluoropolyethers having fluorinated epoxy groups positioned along their perfluoropolyether chain, and free from peroxidic oxygen, are obtained by means of a low-temperature oxidation process, in the liquid phase, with molecular oxygen and in the presence of U.V. light, of a mixture of a perfluorinated monoolefin and a perfluorinated conjugated diene, and by the subsequent photochemical decomposition of the peroxy groups contained in the photooxidation product, carried out by treating the peroxy-groups containing product with U.V. light at a temperature of from 0 DEG C to 160 DEG C. Derivatives of said epoxy containing perfluoropolyethers in which the epoxy groups have been converted to functional groups are also disclosed.
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